[OSM-talk] Wanted feature for API 0.7 ??

[Maarten Deen]

Frederik Ramm wrote:
> Hi,
>
> Peter Dörrie wrote:
> > The current renderes wouldn't be able to handle it either and forcing 50+
> > applications to change would be unappropriate.
>
> Why, we're doing that all the time ;-)
>
> There are many unsolved questions here. For example: What happens if 
> parts of the "ancient" world transcend your "fourth dimension", e.g. a 
> contemporary secondary road uses a few bits of an ancient Roman road. 
> They would surely share the same nodes, wouldn't they? But if someone 
> then deletes the secondary road (which he downloaded without ever 
> knowing that the Roman road also exists because that was shielded from 
> him), he must not delete the nodes because they are still used by other 
> objects...
>   

No... in the temporal database you don't delete nodes or ways, you set 
the correct "used in" period ;)

But it opens a large can of worms if you are looking at temporal 
information. All SciFi books can tell you that.

Maarten